A trio of genera that do not occur in the east essentially. Stenopogon is closely related to the Scleropogon genus in the same tribe. Scleropogon has one species that occurs in Arkansas and that is S. subulatus, the only one that bleeds into the SE and east of the Mississippi river (see bugguide shot here of the Florida version of this species). I just haven't seen it yet. A group of five or six Scleropogon occur in TX. This is a shot from Idaho from John and Jane. And the Ospriocerus are heavily southeastern with about ten to fifteen species into TX and less into OK.

Compare all of these with the eastern Proctacanthus species which I tried to turn this into. And see the wing and antenna differences in the eastern key. At close range you can see the absence of the Proctacanthus terminal spines on this female. And there is a facial difference as well. Both genera have less facial hair and a more rounded face from the frontal aspect than Proctacanthus. Eyes are closer set. None of the western Proctacanthus have leg markings like this. This is Stenopogon inquinatus, which just does reach TX. One other species, S. martini escapes into a good portion of the west. All others in this large genus are in California only or make it only into NV or AZ from CA. One other species, S. engelhardti squeaks into Idaho.

Scleropogon has about 15 NA species. Very similar to Stenopogon with the same small head and narrow facial appearance. Basically if you are not in CA NV or Baja you are likely looking at a Scleropogon with the exception of the species at the top of this page (which is, unfortunately, very variable). The antenna has some proportion differences in the two genera. Several Scleropogon are known into Mexico. Species picticornis and indistinctus are likely the most widespread.

This shot from Texas is likely species Scleropogon helvolus with the overall pale coloration and no red abdominal markings or contrasting colors. There are several TX species I do not have descriptions on however.

Topside shot of the same individual from Texas showing the lack of the large spines on the female terminus as in Proctacanthus. These also have much more leg spines than Proctacanthus. Note again in this angle how small the head looks in proportion to that elongate body.

Excellent shot from New Mexico by Bob Barber of a member of the third large genera in this trio. You can make out the wing cells here and there is enough difference in Ospriocerus to slip this into that group. As opposed to Stenopogon, these are concentrated in NM and TX and only two species occur in CA. Note the almost elongate triangle of the last large segment of the antenna. This is O. latipennis. And it occurs over the whole slash from Alberta and Manitoba in Canada down to NM and TX. And what a beauty. This is the female.

And a Texas Ospriocerus that is likely rhadamanthus. Several dark species there that are marked with orange including the very variable abdominalis. This is a male. Again note the more normal appearing head size in this genus.